OnRamperX

What it does

OnRamperX is a non-custodial value router for agents and humans: fiat<->crypto and cross-chain via one quote interface (Coinbase Onramp v2, Relay, x402). This endpoint returns the router's live capabilities and rail status; use /api/x402/quote for a ranked route. Settlement centers on USDC on Base.

Audience: ai-agents, developers. Tags: relay, settlement.

Pricing

How agents pay

1. The agent sends a plain request and receives an HTTP 402 response describing the price and payment requirements.
2. The agent signs a payment payload for the exact amount on base and attaches it to a retried request.
3. The facilitator verifies and settles the payment, then the service returns the paid response.

Related services

• Oblique Markets — Use when an agent needs a trusted UTC timestamp or the smallest end-to-end test of its x402 payment client.
• Riddle Oracle — Pay a micro-fee in USDC on Base mainnet to receive a riddle and its answer.
• OneFaith (OneFaith) - x420.dev — Faith lives.

Facet hubs for this service

• Chain: Base services
• Facilitator: Coinbase Cdp profile
• Price band: Micro ($0.01 or less per request)

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• Mercer x402 (hub probe) — Settlement canary: returns a timestamped pong JSON after USDC micropayment.